.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.03em;
}

/* ---------- 首屏 ---------- */
.page-about .pg-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--night);
  color: var(--white);
}

.page-about .pg-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-about .pg-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 26, 47, 0.78) 0%, rgba(10, 26, 47, 0.5) 42%, rgba(10, 26, 47, 0.94) 100%);
}

.page-about .pg-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  max-width: none;
}

.page-about .pg-hero__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 96px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 62vh;
  justify-content: flex-end;
}

.page-about .pg-hero__crumb {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .pg-hero__crumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

.page-about .pg-hero__crumb a:hover {
  color: var(--orange-lit);
}

.page-about .pg-hero__crumb .breadcrumb__sep {
  margin: 0 6px;
  color: rgba(255, 255, 255, 0.4);
}

.page-about .pg-hero__title {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(30px, 7vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-about .pg-hero__lead {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(248, 246, 240, 0.84);
}

.page-about .pg-hero__index {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .pg-hero__index li {
  background: rgba(10, 26, 47, 0.62);
}

.page-about .pg-hero__index a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 11px 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .pg-hero__index a:hover,
.page-about .pg-hero__index a:focus-visible {
  background: rgba(255, 90, 31, 0.2);
  color: var(--white);
}

.page-about .pg-hero__index .mono {
  font-size: 11px;
  color: var(--orange);
}

/* ---------- 章节骨架 ---------- */
.page-about .pg-chapter {
  border-top: var(--hair);
  background: var(--paper);
}

.page-about .pg-chapter--dark {
  background: var(--night);
  color: var(--paper);
  border-top-color: rgba(255, 255, 255, 0.12);
}

.page-about .pg-chapter__mark {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 28px 20px 0;
}

.page-about .pg-chapter__mark span {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--fog);
}

.page-about .pg-chapter--dark .pg-chapter__mark span {
  color: rgba(248, 246, 240, 0.55);
}

.page-about .pg-chapter__main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 20px 56px;
}

.page-about .pg-chapter__prose {
  max-width: var(--readw);
  display: grid;
  gap: 14px;
  font-size: 16px;
  line-height: 1.78;
}

.page-about .pg-chapter__prose p {
  margin: 0;
}

.page-about .pg-chapter--dark .pg-chapter__prose {
  color: rgba(248, 246, 240, 0.8);
}

.page-about .pg-chapter__prose a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 90, 31, 0.45);
}

.page-about .pg-chapter__lead {
  margin: 0 0 24px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--fog);
}

.page-about .pg-chapter--dark .pg-chapter__lead {
  color: rgba(248, 246, 240, 0.66);
}

.page-about .pg-chapter__note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(248, 246, 240, 0.6);
}

.page-about .pg-chapter__note a {
  color: var(--orange-lit);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 76, 0.5);
}

.page-about .pg-year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(54px, 14vw, 132px);
  line-height: 0.84;
  letter-spacing: -0.05em;
  color: var(--line);
  margin-bottom: 10px;
}

.page-about .pg-chapter--dark .pg-year {
  color: rgba(255, 255, 255, 0.16);
}

.page-about .pg-chapter .title-lg {
  margin: 0 0 18px;
  font-size: clamp(24px, 4.4vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  font-weight: 900;
  max-width: 22ch;
}

/* ---------- 时间轴 ---------- */
.page-about .pg-tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  max-width: 760px;
}

.page-about .pg-tl::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: rgba(255, 255, 255, 0.2);
}

.page-about .pg-tl__item {
  position: relative;
  padding: 0 0 26px 36px;
}

.page-about .pg-tl__item:last-child {
  padding-bottom: 0;
}

.page-about .pg-tl__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px var(--night);
}

.page-about .pg-tl__item--now::before {
  background: var(--orange);
}

.page-about .pg-tl__year {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--orange-lit);
  margin-bottom: 4px;
}

.page-about .pg-tl__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .pg-tl__item p {
  margin: 0;
  max-width: 34em;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(248, 246, 240, 0.76);
}

/* ---------- 团队 ---------- */
.page-about .pg-chapter__main--split {
  display: grid;
  gap: 32px;
}

.page-about .pg-team {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .pg-team__item {
  background: var(--white);
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 16px 16px 18px;
}

.page-about .pg-team__num {
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--orange);
}

.page-about .pg-team__role {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .pg-team__item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog);
}

.page-about .pg-figure {
  margin: 0;
}

.page-about .pg-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: var(--hair);
  clip-path: polygon(0 0, 100% 0, 100% 94%, 0 100%);
}

.page-about .pg-figure__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--fog);
  border-left: 2px solid var(--orange);
  padding-left: 10px;
}

.page-about .pg-chapter--dark .pg-figure__cap {
  color: rgba(248, 246, 240, 0.62);
}

.page-about .pg-figure--wide {
  margin: 26px 0;
}

/* ---------- 规格表 ---------- */
.page-about .pg-spec {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  max-width: 780px;
}

.page-about .pg-spec__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  align-items: baseline;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .pg-spec__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}

.page-about .pg-spec__freq {
  font-size: 13px;
  color: rgba(255, 138, 76, 0.95);
}

/* ---------- 比分牌面板 ---------- */
.page-about .pg-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 28px;
}

.page-about .pg-stats__item {
  background: var(--white);
  padding: 16px 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .pg-stats__num {
  font-size: clamp(26px, 6vw, 40px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--night);
}

.page-about .pg-stats__label {
  font-size: 12px;
  line-height: 1.65;
  color: var(--fog);
}

/* ---------- 三种用法 ---------- */
.page-about .pg-paths {
  display: grid;
  gap: 1px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .pg-path {
  background: var(--night-mid);
  padding: 22px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .pg-path:hover {
  transform: translateY(-2px);
}

.page-about .pg-path__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.01em;
}

.page-about .pg-path p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(248, 246, 240, 0.78);
}

.page-about .pg-path__link {
  margin-top: auto;
  font-size: 13px;
  color: var(--orange-lit);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 76, 0.45);
  align-self: flex-start;
  padding-bottom: 2px;
}

.page-about .pg-path__link:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

.page-about .pg-cta {
  margin-top: 32px;
  display: grid;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about .pg-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(248, 246, 240, 0.78);
  max-width: 34em;
}

.page-about .pg-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-about .pg-hero__inner {
    padding: 140px 48px 64px;
    gap: 18px;
    min-height: 68vh;
  }

  .page-about .pg-hero__lead {
    font-size: 17px;
  }

  .page-about .pg-hero__index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
  }

  .page-about .pg-hero__index a {
    padding: 13px 16px;
    font-size: 14px;
  }

  .page-about .pg-chapter {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    max-width: var(--maxw);
    margin: 0 auto;
    border-top: none;
  }

  .page-about .pg-chapter--dark {
    max-width: none;
    background: var(--night);
    border-top: none;
  }

  .page-about .pg-chapter--dark .pg-chapter__main,
  .page-about .pg-chapter--dark .pg-chapter__mark {
    max-width: var(--maxw);
  }

  .page-about .pg-chapter__mark {
    padding: 104px 0 0;
    margin: 0;
    display: flex;
    justify-content: center;
    border-top: var(--hair);
  }

  .page-about .pg-chapter--dark .pg-chapter__mark {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .page-about .pg-chapter__mark span {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    letter-spacing: 0.34em;
    font-size: 11px;
    padding-bottom: 6px;
  }

  .page-about .pg-chapter__main {
    padding: 88px 48px 96px 0;
    border-top: var(--hair);
  }

  .page-about .pg-chapter--dark .pg-chapter__main {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-right: 48px;
    padding-left: 24px;
  }

  .page-about .pg-chapter__main--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
    gap: 48px;
    align-items: start;
  }

  .page-about .pg-chapter__main--split .pg-figure {
    margin-top: 8px;
  }

  .page-about .pg-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .pg-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .pg-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }
}

@media (min-width: 1200px) {
  .page-about .pg-chapter__mark {
    padding-top: 116px;
  }

  .page-about .pg-chapter__main {
    padding-right: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .pg-path,
  .page-about .pg-hero__index a {
    transition: none;
  }

  .page-about .pg-path:hover {
    transform: none;
  }
}
<<<END>>>